CVE-2021-25487
Samsung Mobile Devices Out-of-Bounds Read Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 20 July 2023). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
Lack of boundary checking of a buffer in set_skb_priv() of modem interface driver prior to SMR Oct-2021 Release 1 allows OOB read and it results in arbitrary code execution by dereference of invalid function pointer.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.64% probability · 50th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Listed 29 June 2023 · due 20 July 2023
- Weakness
- CWE-125
- Affected
- samsung/android
- Source
- mobile.security@samsung.com
EPSS 0.6% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
CISA notes
Apply updates per vendor instructions or discontinue use of the product if updates are unavailable https://security.samsungmobile.com/securityUpdate.smsb?year=2021&month=10; https://nvd.nist.gov/vuln/detail/CVE-2021-25487
References
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.